1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
// Copyright 2015 Peter Dimov.
//
// Distributed under the Boost Software License, Version 1.0.
//
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
#include <boost/core/lightweight_test_trait.hpp>
#include <boost/mp11/list.hpp>
#include <boost/mp11/integral.hpp>
#include <type_traits>
#include <tuple>
#include <utility>
int main()
{
using boost::mp11::mp_list;
using boost::mp11::mp_empty;
using boost::mp11::mp_true;
using boost::mp11::mp_false;
using L1 = mp_list<>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_empty<L1>, mp_true>));
using L2 = mp_list<void>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_empty<L2>, mp_false>));
using L3 = mp_list<int[], void, float>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_empty<L3>, mp_false>));
using L4 = std::tuple<>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_empty<L4>, mp_true>));
using L5 = std::tuple<int>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_empty<L5>, mp_false>));
using L6 = std::tuple<int, int>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_empty<L6>, mp_false>));
using L7 = std::pair<char, double>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_empty<L7>, mp_false>));
using L8 = std::add_const<void()>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_empty<L8>, mp_false>));
return boost::report_errors();
}
|
